After the downpour of Motegi, the weather in Australia decided to help the riders acclimatise with some more drops of rain in the days leading up to practice. The rainfall stopped just in time for FP1 but the session started with damp patches still scattered on the circuit. The situation was quite quickly resolved by the strong winds, which were also somewhat unhelpful for the lightweight class.
Joan Mir would not let history repeat itself after the strange performance in Japan, the world championship leader featuring heavily at the top of the standings right out the box this time around. The Spaniard led for most of the session, until Nicolo Bulega eyed up a slipstream in the last handful of minutes and dragged Ayumu Sasaki with him over the line. The Italian didn’t get another chance to further improve his performance after an eager move into turn four slid him out of contention and took Aron Canet with him. Mir only just avoided the incident but could not improve himself so Bulega kept top honours at the flag.